Muffler



Nov. 16 1926.

L. BAUROTH MUFFLER F'i led March 5 Ll I lllil QM ha..

Patented Nov. 16, 1926.

UNITED STATES LEONHARD BAUROTH, OF TOLEDO, OHIO, ASSIGNOR T0 THEWILIiYS-OVERLAND PANY, OF TOLEDO, OHIO,

item6 PATENT oFFlc-E.

A eonPonAToN or orafo.

MUFFLER.

Application filed March 5, 1921.

My invention relates to mufflers and has for its object to provide adevice of this kind comprising few parts, of simple conn struction,which can be manufactured and assembled at a relatively low cost andwhich will afford an extremely light and strong construction.

A. further object of the invention isV to provide an improved mufflerconstructed of a plurality of tubular sections connected by means ofinterlocking or intereng-aging flanges formed upon the sections.

A further object of the invention is to provide an improved mufflercomprising a plurality ot telescoping cup-shaped sections suitablyconnected together, the end Iwalls of the cups forming baffle plateswithin the muffler having perforations therein for the passage of theexhaust gases therethrough.

A further object of the invention is to provide a muffler having animproved joint construction for receiving the ends of the exhaust tubesleading to and from the same.

Vith these and other objects in view the invention comprises certainimproved forms of construction, arrangements of parts, and combinationsof elements which will be hereinatter more fully described andV claimed,it being understood that the present showing is intended to illustrateone form of' the invention, which is susceptible of variousmodifications to suit special or varying conditions, and it will befurther understood that the terms which I have used are merelydescriptive and not limiting and that it is my intention to include anyand all modifications whicli come within the scope of the invention asdefined by the appended claims.`

In the accompanying drawings I have illustrated one embodiment of theinvention in which:

Figure I is a side elevation, partly in section, of a muffler embodyingthe invention.

Figure II is an enlarged detailed section taken on line II-II of FigureI.

Figure III is a detailed section taken on line III-III of Figure I.

Referring to the drawings 10 represents a muffler comprising the tubularend sections 11 and 12 and the intermediate sections 13 each of which isin the form of a cup, the closed end of one section being telescopedint-o the open end of the adjacent section, said ends being indicated at14 and all pro- Serial No. 449,626.

vided with perforations or openings 15 except in thecase of the rear endsection 12. The closed Ven ds of' the cups form baffle plates within thetube for cl'iecking the flow of the exhaust gases through the mufflerand the perforations or openings 15 may be of' any size and numberdesired, to suit different types of engines. The cups or tubularsections may be connected in any suitable manner, but each is preferablyprovided adjacent its closed end with an annular bead or rib 16 disposedwithin an annular grooved rib or flange 17 at the open end of theadjoining rcup as shown in Figure I. Theribs or flanges j 17 are firstformed with their edge portions 18 extending substantially parallelVwith the body 'of the cup, as indicated by dotted lines at 19 in FigureIII. These portions are Vafterwards bent down and clampedV upon the'ribs 16 'by the use' of any lsuitable tools or devices designed for thepurpose. The end section 11 of the muffler is provided with an annulargrooved flange 2O 'similar to the flange 17 and a disc or end closuremember 21 has its edges disposed Within the groove of said flange, theedge 22 of which is bent down into clamping engagement with said disc asshown at the right of Figure I. The disc 21 and end wall 14 of the rearcup 12 are each provided with a central opening adapted to receive thetubes or pipes 23 and 2a rcspectively, for conveying the exhaust gasesto and from Athe muffler. The joints between the tubes and end closuremembers are substantially of the same construction and a description ofone will suffice for both. Disposed within the muliier upon the closure21 is an annular and inwardly projecting fianged member 25 having aninwardly turned portion 26. The tube 23 is projected through the closure21 into the flanged meinber 25 and isV surrounded by a packing ring 27disposed within and retained by the portion 26 of flanged member 25. Thetube is preferably provided with an annular rib or bead 28 engaging theouter edge of the packing ring 27 and a retaining ring 29 is adapted toencircle the tube with its inner edge seated upon the rib 28 as shown atthe right of Figure I. Screwed into the dise 21 or otherwise connectedtherewith are the stud bolts 30 carrying a clamping plate 31 whichengages the outer end of the retaining ring 29, the joint beingtightened to the desired degree by turning the nuts 32 on the bolts 30.T he clamping plate 31 is provided with outwardly turned ribs or flangeswhich serve to stillen or strengthen the same, said flanges being cutaway at the ends of the plate to provide sufficient clearance for thewrench or other tools employed to unscrew the nuts from the bolts. Thisconstruction permits the tube to be quickly detached from the muffler,simply by unscrewing the nuts from the bolts, after which the tubes maybe readily withdrawn.

lVhile have illustrated and described one embodiment of my invention itwill be obvious that different modifications thereof may be constructedto suit different conditions and I wish therefore not to be restrictedor limited to the precise embodiment shown except in so far as the 'sameis limited by appended claims.

lVh-at I, claim as new and desire to secure y by Letters Patent is:

1. A mufller comprising a plurality of telescoping cup -shaped sections,each section having an outwardly extending annular flange formed thereinadjacent the closed end thereof and having a reduced diameter betweensaid flange and said closedend, each section other than one end sectionhaving an outwardly extending annular flange formed at its open endfirmly engaging the flange at the closed end of the next adjacentsection, the end section having an annular` flange at its open end, aflat closure firmly engaged by the flange on the terminal section, andeach of said flanges being tightly crimped whereby the section jointsare gas tight and the muffler assembly is made a self-supporting unit.

A niuflier comprising a plurality of telescoping cup-shaped sectionshaving perforated end heads7 each of said sections having an outwardlyextendingV flange formed thereon in spaced. relation to its head andhaving that portion between the flange and the head of reduced diameter,the open end of each 'section other than one end section overlying saidpart of reduced diameter and having its free edge bent aroundA saidflange to firmly secure the sections together, and a fiat closure forthe end section having its peripheral portion .firmly engaged 'by theoutwardly extending flange of saideud section and all of said flangesbeing tightly pressed Vinto laminated gas tight joints, whereby aunitary self-supporting muffler is formed. Y j

in testimony whereof, I allix my signature.

LEONHAR-D BAUROTH.

